My recent reading includes large helpings of Philippa Gregory's latest, THREE SISTERS, THREE QUEENS (2016), another of her fictionalized takes on love and betrayal among the royals of Renaissance Europe.
In this book, the focus is on the early Tudor dynasty, and especially on Margaret Tudor, the eldest daughter of Henry VII, founder thereof, and the older sister of the future Henry VIII. Margaret became Queen of Scotland with an arranged marriage to James IV. She reigned and ruled under the title of Dowager Queen after James' death at the Battle of Flodden in 1513.
So who, you ask, were the other two sisters of the novel's title? One is Margaret's blood sister, Mary Tudor, who was known as one of the great beauties of the age. Mary was the inspiration for the name her brother Henry gave to his older daughter. More important for Gregory's story, she wed the King of France (Louis XII) in 1514, and Anne Boleyn served as her maid of honor at that ceremony.
The third "sister" was properly their sister-in-law, Katherine of Aragon. The outlines of her story, and its connection to the same Anne Boleyn, are well known.
Gregory has Margaret narrating this novel, in the present tense. Thus, when James IV is headed off to invade England, "He bids me a formal farewell, as if we are a king and queen of a romance. He bows before me and I put my hand on his stubborn red head and give him my blessing., He rises up and kisses my hand. I give him a silk handkerchief embroidered with my initials and he tucks it inside his jacket, as if it were a favor and he was only going jousting."
That sort of narration can be very difficult to pull off at any length, and I think Gregory does it well. The present tense doesn't become drag or distraction. Still, young would-be novelists, don't try this at home.